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‫Instructor: Hi.

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‫Within this lecture,

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‫we're going to give you your first assignment,

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‫so you're gonna be building the worst calculator ever.

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‫I'm calling it worst because this is so simple.

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‫We can only do four basic operations in this calculator.

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‫Let me give you an example.

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‫So, I write 10 and 20.

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‫I can sum them and I can subtract one from each other.

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‫I can just try to multiply them or divide one by another.

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‫So, as you can see, this is worst.

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‫Of course, this is not an app

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‫that you may want to upload to your app store,

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‫but this will give you a good chance

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‫to practice what you have been learning so far.

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‫So, maybe you're thinking right now,

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‫there are some elements in here that we haven't covered yet.

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‫Yes, that's correct.

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‫For example, we don't know how

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‫to get this input from a user, right?

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‫But, it's fairly easy.

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‫I suggest you pause the video after the lecture

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‫and try to Google this

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‫and find out about how to do this input thing.

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‫Let me even give you a hint.

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‫This is called TextField, okay.

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‫You can find this under library.

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‫So, remember how we dragged (indistinct)

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‫from the library in the first section?

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‫That's how you do that.

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‫You can just try to quickly Google

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‫how to use text fields in Swift iOS

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‫and you can find about all these operations.

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‫And don't worry if you cannot do that on your own,

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‫or don't worry if you don't wanna do that.

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‫I'm going to be explaining this

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‫and I'm going to be explaining a lot more

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‫during these next three lectures,

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‫but this will be a good chance for us

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‫to practice what we have been learning so far

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‫so that we're gonna go and build

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‫the worst calculator ever has been made

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‫in the history of world.

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‫So, let's stop here and continue in the next lecture.